Physics, 15.04.2020 00:39 austin5053
For each of the following statements, determine whether it is true or false.
1) Spring A is stiffer than B (kA > kB). Less work must be expended on spring A if both springs are stretched by the same amount.
2) The kinetic energy of an object depends on the direction of the motion involved.
3) The work done to raise a box onto a platform does not depend on how fast it is raised.
4)The friction force is a non-conservative force.
5) The kinetic energy can be negative.
6) The kinetic energy does not depend on the reference frame of the observer.
7)Work can be done in the absence of motion.
8)If the moon revolves around the earth in a perfectly circular orbit, then the earth does do work on the moon.
Answers: 3
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Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k
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What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane
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Physics, 23.06.2019 00:20
The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 ร 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g
Answers: 2
For each of the following statements, determine whether it is true or false.
1) Spring A...
1) Spring A...
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